Methods of determining wellbore integrity

A wellbore integrity monitoring configuration comprising:

• an electrically insulating layer disposed between the subsurface formation and a wellbore casing,
• an electrically conductive data conduit coating disposed between the wellbore casing and the electrically insulating layer,
• a plurality of wellbore sensors, and
• a surface interrogator in communication with the wellbore sensors via the electrically conductive data conduit coating, in which:
• the wellbore sensors comprise pressure sensors, temperature sensors, piezoelectric acoustic sensors, flowmeters for determining flow rate, accelerometers, resistivity sensors for determining water content, velocity sensors, weight sensors, or combinations thereof;
• the electrically conductive data conduit coating provides a medium for data transmission from the wellbore sensors to the surface interrogator;
• the electrically conductive data conduit coating comprises carbon fibers, carbon nanofibers, carbon nanotubes, carbon nanosheets, graphene, or combinations thereof;
• the electrically conductive data conduit coating has a conductivity in a range from about 0.01 ohm meters (Ωm) to about 20 Ωm;
• the wellbore sensors are disposed in the subsurface formation, the electrically conductive data conduit coating or in an intervening layer disposed between the electrically conductive data conduit coating and the wellbore casing;
• the wellbore sensors are operable to measure a condition that is indicative of the integrity of the wellbore and to generate sensory data representing the wellbore condition;
• and
• the surface interrogator, the wellbore sensors, and the electrically conductive data conduit coating are collectively configured for the transfer of sensory data from the wellbore sensors to the surface interrogator via the electrically conductive data conduit coating to facilitate monitoring of the integrity of the wellbore based on sensory data received from the wellbore sensors.